Microsoft Word - ECH -13 & 14(UT-214/16).doc

Bản ghi

1 ECH-XIII & XIV (C) (UT-214/16) ECH-XIII & XIV (C) (UT-214/16) 2 ß±Ó fl Û±Í Sê ( B.D.P.) ø é ± ı «±ôl Û ı œé ± ( Term End Examination ) øî À ı, 2015 Ê Ú, 2016 ı ± Ú ( Chemistry ) ø26 fl Û±Í Sê ( Elective ) SÀ ±apple ı Ó apple«ûs ( 13th & 14th Paper ) ( Organic Chemistry and Bio-Chemistry ) apple KI ± Û Ì«±Ú 50 Time : 2 hours Full Marks : 50 [ ±ÀÚ ı &èq 70% ] Weightage of Marks : 70% Ûø ı ø Ó Ô± Ô Î M À ı ı Ê Ú ø ıà Œapple ± À ıº qx ı±ú±ú, Ûø ı 26 ißó ± ı Ûø ı ± ı ô ±é À ı ı Œé ÀS Ú ı Œfl ÀÈ ŒÚ ± À ıº Î Û±ÀôL õ Àùü ı ±Ú ø Ó ±À º õ Ô ø ıˆ ± - fl 1º Œ -Œfl ±ÀÚ± fl øè õ Àùü ı Î M ı øapple Ú 10 1 = 10 [fl ] [ ] ±ÀÊ ±Ú Í Ú ø ıøsê ± õ Ô Ò±À Û fl Œ ± PhNH 15 NH 2 ı Û ı ıó π Ò±À Û apple í Œ ± PhNHNH 2 ı ı ± ı fl ı À ±ÀÊ ±ÀÚ ı Í Ú fl œ À ı ı ± ± øúfl œfl ı ÀÌ ı ± ±À 15 ı ± ± fl èúº N - ı ı ö±ú Àg ±À ±fl Û±Ó fl èúº [ ±] FMO Ó N Ú ± œ ø ıøfl ø ı Ó ı øù õ À ±À [2 + 2] ı M œ À ±Ê ÀÚ ı y± ı Ó ± ı ± ± fl èúº [ ] [ ] Œ ø ı øù ã [Merrifield] ÛXøÓ ÀÓ fl œˆ ±À ı Gly.Ala.Phe C± À Û ÛÈ ± Î øè Àù fl ı À ıú ø ıøsê ± ı õ øó øè Ò± Û Î À~ fl èúº [ ±] øúàê ı Î Û±M &ø ŒÔÀfl C 3 H 6 O Œ à øè ı Í Ú øúì«fl èúº IR = 1720 cm "1 ; UV = 300 nm ("~ 40) and 1 H NMR = "2 # 0ppm ø ıˆ ± - 2º Œ -Œfl ±ÀÚ± fl øè õ Àùü ı Î M ı øapple Ú 6 1 = 6 [fl ] ŒSê±À ±ÀÙ ± ı, ŒSê±À ±ÀÊ Ú ı À'±ÀSê± fl ±Àapple ı ıà Î apple ± ı Ì ı øá À ø Úº 6 [ ] øù ÚÀ ı é ± ı œ ^ ıàì ı ±ÀÔ Œflv ±À ı ±Ù «ø ø À Î M 5 fl ı À fl œ È À ı λ Ûiß Œ à øè ı /Œ à &ø ı Í Ú ø Ú ı ı ± ± øúfl œfl ı Ì ø ıøsê ±- Œfl à Œapple ±Úº 6 ø ıˆ ± - 3º Œ -Œfl ±ÀÚ± øó ÚøÈ õ Àùü ı Î M ı øapple Ú 3 3 = 9 [fl ] " -D- Àfl ±ø Û ı ±ÀÚ±Ê "-D- Àfl ±ø Û ı ±ÀÚ±ÀÊ ı Í Ú ø Ú ı Àapple ı ö±ø Q ±À ± Ú± fl èúº 3 B.Sc-7155(C)-B [ ÛÀ ı ı Û á ± ^ Ü ı B.Sc-7155(C)-B

2 3 ECH-XIII & XIV (C) (UT-214/16) ECH-XIII & XIV (C) (UT-214/16) 4 [ ] ø ƒ ± Cø Ûfl Û Ìø ı«ú ± ø ıøsê ± ı :± øapple Ú ı Î Û ƒmê Î apple ± ı Ì ı ± ± fl èúº 3 [ ] øôø Ú À Ûé ± ø ıî È ±Î ± ÀÚ À fl CÚ Ûø ı ı øm Ê øúó " max apple œ «Ó ı Ó ı eõapple «ø ıø Ü Œfl Ú MO- ı  ø ı Àfl ı ± ± fl èúº 3 [ ] ±ø Î ± ± Î À Ûé ± ±ø Î Œflv ± ı ± ÀÎ ı õ ± ı Ì ÛµÚ fl Û±Ç [stretching vibration] Î 2 Ó ı fl Û±ÀÇ Ûiß Œfl Ú ı ± ± fl èúº 3 [ ] Œflv ± ı ± ÀÙ øúfl ± Ù ±& ±øúøî Ú Ê ı Œ à apple øè ı Í Ú ø Úº õ ÀÓ Àfl ı fl øè fl À ı ı ı ±ø ı fl õ À ± Î À~ fl èúº 3 [ ] fl øè ±ÚÔ˱fl ÀÚ±Ú ± ı?àfl ı Ú± ı ± ± øúfl Í Ú ø Úº ø Àä ı ı ı ± ı Î À~ fl èúº 3 ø ZÓ œ ø ıˆ ± - fl 4º Œ -Œfl ±ÀÚ± fl øè õ Àùü ı Î M ı øapple Ú 10 1 = 10 [fl ] Î ø ı ± ÀSê ı õ À ±Ê Úœ Ó ± Î À~ fl èúº øè Œfl ±À ı Œfl ±Ô± ÀÈ Î ø ı ± ÀSê ı Àg ±À ±fl Û±Ó fl èúº [ ] [ ] øî ø' ı ± À ı±øúî øflv fl ±ø Î [øî. Ú. ] ı Í Ú Ûøfl«Ó ±È Ú [Watson] ı øsêflƒ [Crick] ÀÎ øè ı ıì«ú± øapple Úº [ ±] Œ È ± ıø fl ±ø ÀÎ ±ø fl ±Àfl ıà ı ± ± fl èúº ø ıˆ ± - 5º Œ -Œfl ±ÀÚ± fl øè õ Àùü ı Î M ı øapple Ú 6 1 = 6 [fl ] Ù ±øè ±ø ÀÎ ı Ûø øó Œfl ±À ı Œfl ±Ô± ÀÈ Œõ ±ø Û Ú± CoA - ı Ûø øó ıì«ú± fl èúº 6 øúà ı ı + Û±ôL ı &ø ÀÓ Î»À fl, -λÀ fl ı õ À ±Ê Úœ ı ± ± øúfl ø ıfl ± ı fl Î À~ fl èú [ ] [ ] ÙË À" ±Ê -6- Ù ÀÙ È ""# ÙË À" ±Ê -1, 6- ø ı ƒù ÀÙ È [ ±] ø ± ı ± øî ± Î -3-Ù ÀÙ È ""# 3 Ù ÀÙ ±ø ±À ı È º ø ıˆ ± - 6º Œ -Œfl ±ÀÚ± øó ÚøÈ õ Àùü ı Î M ı øapple Ú 3 3 = 9 [fl ] fl øè Ê ı é ± ı Àfl ı Ú± ı ± ± øúfl Í Ú ø Ú Œ øè øî ø' ı ± À ı±øúî øflv ± ÀÎ Ô±Àfl øfl c ı ± À ı±øúî øflv ± ÀÎ Ô±Àfl Ú±º é ± ı Z± ı ± øí Ó øúî øflv ± Î øè ı fl ±Ê fl œ 3 [ ] ±ø ÀÚ± ±ø ÀÎ ı Ó øî ˇ» ph [isoelectric ph] ı ÀÓ fl œ Œ ı±á ± fl øè Î apple ± ı ÀÌ ı ± ±À ı ± ± fl èúº 3 [ ] ø ø ÛÀÎ ^ ıìœ øó ÚøÈ øˆ È ±ø ÀÚ ı Ú± ø Ú ı ±Ú ıàapple À Àapple ı øsê ± Î À~ fl èúº 3 [ ] ø fl øè ø Àe±ø ø ÛÀÎ ı Ú± Í Ú ø Úº ı ± Œfl ±Úƒ Œfl ±À fl ±Ê fl À ı º 3 [ ] øúàfl ±øè øúfl ±ø Î ŒÙ ±ø fl ±ø ÀÎ ı fl ±Ê fl œ fl œ [ ] ŒÊ À fl À C±ÀÙ ±À ı ø ƒ fl œ øè Œfl ±Ô± ı ı +Ó 3 B.Sc-7155(C)-B [ ÛÀ ı ı Û á ± ^ Ü ı B.Sc-7155(C)-B

3 ECH-XIII & XIV (C) (UT-214/16) ECH-XIII & XIV (C) (UT-214/16) 2 ( English Version ) Special credit will be given for precise and correct answer. Marks will be deducted for spelling mistakes, untidiness and illegible handwriting. The figures in the margin indicate full marks. First Part Group - A 1. Answer any one question : 10 1 = 10 (A) (a) What would be the structure of osazone when one mole of PhNH 15 NH 2 and two moles of PhNHNH 2 are used respectively in the first and subsequent steps (B) (a) How would you synthesise the tripeptide Gly.Ala.Phe by Merrifield method? Mention each step of the reaction. (b) Deduce the structure of the compound C 3 H 6 O from the following data. IR = 1720 cm "1 ; UV = 300 nm ("~ 40) and 1 H NMR = "2 # 0ppm. of osazone formation reaction? Explain with chemical equations. Throw light on the position of 15 N. Group - B (b) Apply FMO theory to explain the 2. Answer any one question : 6 1 = 6 feasibility of [ ] cycloaddition reaction under photochemical condition (A) (What are chromophore, chromogen and auxochrome? Explain with examples. 6 B.Sc-7155(C)-B [ ÛÀ ı ı Û á ± ^ Ü ı B.Sc-7155(C)-B

4 3 ECH-XIII & XIV (C) (UT-214/16) ECH-XIII & XIV (C) (UT-214/16) 4 (B) What happens when an alkaline solution of phenol is heated with chloroform? Write the structure of the product(s). Give reaction mechanism (D) Why does the stretching vibration of acid chloride occur at higher frequency than that of acid amide? Explain. 3 with chemical equation. 6 Group-C 3. Answer any three questions : 3 3 = 9 (E) Write the structures of chloramphenicol and sulphaguanidine. Mention one practical use of each. 3 (A) Write the structures of " -Dglucopyranose and "-D-glucopyranose and discuss their stability. 3 (B) Define sigmatropic rearrangement reaction and illustrate with a suitable example. 3 (F) Write the name and chemical structure of an anthraquinone red dye. Mention its use in industry. 3 Second Part Group - A (C) Why is " max value for electron 4. Answer any one question : 10 1 = 10 transition in butadiene greater than that in ethylene? Explain with MO picture. 3 (A) Mention the necessity of Urea cycle. Where does it take place in cell? Throw light on Urea cycle B.Sc-7155(C)-B [ ÛÀ ı ı Û á ± ^ Ü ı B.Sc-7155(C)-B

5 ECH-XIII & XIV (C) (UT-214/16) ECH-XIII & XIV (C) (UT-214/16) 2 (B) (a) Describe the Watson and Crick model on the structure of DNA. Group - C 6. Answer any three questions : 3 3 = 9 (b) What is metabolic acidosis? Explain Group - B 5. Answer any one question : 6 1 = 6 (A) Where does the catabolism of fatty acid take place in cell? Describe the catabolism of propionyl CoA. 6 (A) (B) Write the name and chemical structure of an organic base which is present in deoxyribunucleoside but absent in ribonucleoside. What is the role of this nucleoside? 3 What is meant by isoelectric ph of amino acid? Explain with an example. (B) Mention the enzyme, coenzyme and necessary chemical reagent in the following conversions : (a) Frucose-6-Phosphate " Fructose 1, 6 bisphosphate (b) Glyceraldehyde-3-phosphate " 3 phosphoglycerate (C) Name three vitamins which are soluble in lipid and mention their actions in human body. 3 (D) Write the name and structure of a sphingolipid. In which cell does it work? 3 B.Sc-7155(C)-B [ ÛÀ ı ı Û á ± ^ Ü ı B.Sc-7155(C)-B

6 3 ECH-XIII & XIV (C) (UT-214/16) ECH-XIII & XIV (C) (UT-214/16) 4 (E) What are the functions of nicotinic acid and folic acid? (F) What is Gel electrophoresis? Where is it used? 3 B.Sc-7155(C)-B [ ÛÀ ı ı Û á ± ^ Ü ı B.Sc-7155(C)-B